Heating stove



March 26,1929. A GLENN 1,706,572

I HEATING STOVE Filed April 50, 1928 @,422 u ,/-9 MIT-m l I [amo o @weoi] J A, 24, lJfC'oowoO/o Z/ 3, i] Q ungt IMO O OWG-L i@ L .,Q i y i[NMa/725;'- /W/en Glenn.

Patented Mar. 26, 1929.

UNITED STATES PATENT OFFICE.

ALLEN GLENN, OSHELL LAKE, WISCONSIN'.

HEATING s'rovn.y

Appucatin mea Aprn ao,

so arranged as to facilitate the circulation of y air thereabout andhence increase the heating vefficiency of said stove. y

A further obfect of the invention is to be found in an improvedarrangement and combination'of combustion chamber and flues, whereby thenatural relative circulation of hot and cold air is utilized to enhancethe efliciency of a heater.

A further object of the invention is to pro-V vide improved means forintroducing unlieated air between the lower ends of spaced,vertically-disposed flues rising from and in combination with acombustion chamberto theend that such air may be heated by and risebetween said flues to establish and maintain a circulation of air in andabout a heater.

' A further object of the invention is to provide an improved flueconstruction for a heater, whereby unimpeded vertical circulation ofheated air Imay, be had within and about said heater.

A further object of the invention is toprovide improved structuralfeatures to be ernployed in connecting spaced, 'vertically-disposedflues of a heater with'a smoke chamber. A further object of theinvention is to pro- V vide a heater of the type hereinafter describedthat is inexpensive of manufacture,

simple of assembly, eliicient in operation and susceptible of beinghoused in anv ornamental easing without limitation of its efficiency.

My invention. consists in the construction, arrangement and combinationof elements hereinafter set forth, pointed out in my claims andillustrated by the accompanying drawing, in which- V 'Y Figure 1 is afront elevation of a conventional combustion chamber equipped with myimprovements and ready for practical use. Figure 2 is aside elevation ofthe showing of Figure 1, the major portion of the conventionalcombustion chamber being omitted to conserve space. 'Figure 3 isa planview ofV the showing of Figure 2, a portion of the top plate beingbrokenaway to show interior construction. Figure 4 is a vertical sectionon the indicated linea-4 of Figure 3. Figure 5 is an isometric view ofone of the struc'- tural elements employed in the improvement;v

192s. serial No. 273,902.

Figure 6 is an isometric View', on a reduced scale, of one ofthe imrovedlues employed in the improvement. IF ric view vof a portion of oneofthe cold air igure 7 is an isomet-V ducts employed in carryingout myinvenfy tion.

In the construction of my improvement as shown, the numeral 10designates a conventional combustion chamber or lireLboX having a hingedfire door 11, an ash door or tray 12, suitable supporting legs 13,abottom plate 14; and a top plate 15, the particular' arrangement shownbeing but-one simple combination of the recited elements, though anyform v'of combustion chamber'suitable for combination withthe remainingelements'of'my improvement may be employed. The top plate 15 of thecombustion chamber is provided with a vplurality of rectangular,laterally spaced openings 16 extending longitudinally from'front torearof said'plate, eachof said yopenings 16being'providecl with anupwardly-eXtending marginalflangejor collar 17, preferably formedintegrallywith said plate. A plurality 'of rectangular 'iiues 18, innumber equal to the openings 16 of the plate 15, are preferably formedof sheet metal' with open upper and lower ends andare of a size 'to slipon, and fit closely in telescoping relation about the flanges 17 of theopenings 16,

' in such manner as to provide'communica'tion between the interior ofsaid iues and the inrterior'o'fsaid`lire-boX through the saidopenings16, such positioning of the flues 18 serv ing to mount them in spacedrelation vertically on and extending upwardly above the top lplate 15 ofthe combustion chamber. A

plate 19 is mounted on-and'extends across the vupperopenends of thel'ues 18, closing said ends, downwarmy-extending integral flanges 2() ofsaid plate 19 being received in telescoping relation within the upperends'of the lilies 18, said plate'19 extending rearwardl beyond the rearedges ofthe tlues 18 and eing provided with rectangular *openings* 21'extending longitudinally of said plate 'and registering, in betweenA theflues 18, a collar 22, adapted to receive a smoke pipe, being formed onand rising from that portion 0f the said plate 19 extending rearwardlybeyond the said llues.

The joints between. the plates l15 and 19andy the ends of the lues 18may be cemented or otherwise sealed andthe assembly of said plates andflues may be rigidly secured and held together by means of bolts 23passing spaced relation, "with the spacesy through and secured againstthe plates 19, or 14, or in any other suitable mannen The rear marginsof the fines 18 are formed with'apertures 241 adjacent their upper endsand a plate is mounted beneath the plate 19 and transversely of the rearmargins of the fines 18, said plate 25 being formed with apertures orslots 26 registering with the apertures 24- and also formed withintegral ribs or flanges 27 positioned to overlap 'on either side of theedges of the apertures 241 and provide means of sealing the connectionbetween the fines 18 and plate 25. liearwardly extending ears 28 areformed adjacent the ends of the plate and a smoke boi; 29, having anopen top and an open side toward the plate 25, is secured to said earsbeneath the extending portion of the plate 19 and behind the plate 25,the interior of said smoke box coinmunicating through the aperture inthe collar 22 with a smoke pipe or stack. From the foregoingdescription, it is readily apparent that smoke, hot gases and flamegenerated in the combustion chamber 1() are free to pass upwardlythrough the apertures 16 into the flues 18, heating said fines, thenpass rearwardly through the slots 26 in the plate 25 into the smoke box29y and from thence, through suitable connections, to a chimney or otherconvenient out-let. The air around and between the flues 18 will becomeheated by the passage of smoke and hot through said flues, Said heatedair being free to rise'as it expands through the apertures 21 of theplate 19 and circulate through the room or building to be heated, coolerair being drawn in between the fines 18 as the heated air expands andrises, thus establishing an emcient circulation of air between and aboutthe said fines. In order to facilitate the circulation of air abovedescribed, air ducts 30, each formed with open ends and a plurality ofholes or apertures 81 on `its upper surface, are mounted on and abovethe plate 15 between the vtlues 18, one end of each duct 8O preferablyextending rearwardly and downwardly relative to said plateand toward theunheated stratum of air. The air ducts 8O provide means for introducingunheatcd or cooler air, which is drawn in through said duct at either'end and discharged through the vholes 31, between the opposed hot wallsof the fines 18 where it is quickly heated and from whence it is free torise, in a straight and unobstructed path, .through the apertures 21 ofthe plate 19, thus preventing undesirable eddies and obstructed aircurrents in and about the flues 18 and greatly increasing the volume ofair heated by a given amount of combustion and hence enhancing theheating efficiency of the assembly.

Since many changes or modiications of specific form and construction maybe made without departing from the spirit of my improvement, l wish tobe understood as being limited by the scope of the appended claimsrather than by the illustrative showing and foregoing description.

I claim as my inventionl. A heater comprising, in combination, a'combustion chamber, spaced, vertically-dis posed fines on and risingfrom said coinbustion chamber and communicating therewith, a platetransversely of and closing 'the open upper ends'of said fines andextending rearwardly therebeyond, apertures' in said plate registeringwith the spaces between said flues, a smoke box transversely of theupper portions of the rear margins of said fines beneath the extendingportionof'said plate and registering apertures in the front wall of saidsmoke box andthe rear margins of said lines.Y

2. A heater comprising, in combination, a combustion chan'iber, spaced,vertically-disposed flues on and rising from said combustion chamber andcommunicating therewith, a plate transversely of and closing 'the openupper ends of said flues and extending rearwardly therebeyond, aperturesinsaid plateV registering with Vthe spaces between said llues, a smokebonr transversely of the upper porons of the rear margins of said fluesbeneath the extending portion of said plate, registering apertures inthe front wall of said smoke box and the rear margins of said flues, andmeans carried by said combustion chamber between said flues forintroducing air between opposed walls of said flues.

3. In a heater having a combustion chainvber and spaced,vertically-disposed fines on,

l. In a heater having a combustion chami ber and spaced,vertically-disposed flueson, rising frein and communicating with saidcombustion chamber, means whereby a direct and unimpeded circulation ofheated air may be established and maintained between said flues, saidmeans comprising cool'air ducts carried by said combustion chamberbetween said fines, apertures in the upper surfaces of said ducts, atransverse plate closing the open upper ends of said flues and aperturesin said plate registering with the spaces between said flues.

5. In a heater having a ceinbustion chain- Vber and spaced, verticallydisposed flues on,

rising from and communicating with said combustion chamber, cool airducts carried by said combustion chamber between said fines, each ofsaid ducts comprising an open-end,

hollow body member substantially filling thev space between adjacentlues, an elbow on and extending` rearwardly and downwardly from the rearend of said body member and a. plurality of openings in the uppersurface of said body member between its ends.

6. In a heater having a combustion champlate registering` with thevapertures in the rear marginsof said flues and a smoke box supported bysaid second plate beneath said Y first plate and rearwardly of saidlues.

7. In a heater having a Combustion chamber and spaced,vertically-disposed lues on, rising from and communicating with saidcombustion chamber, said iues having elosures for their upper ends andapertures in their rear upper margins, a plate transversely 0f the rearupper margins olf' said iiues, apertures in said plate registering withthe apertures in said flues, ribs `on said plate marginally engaging theapertures of said flues and a smoke box Carried by said plate rearwardlyof said apertures.v

In witness whereoiI Ia'fHX my signature.

ALLEN GLENN.

